Refrigeration



C. E. PLOEGER April 13, 1943.

REFRIGERATION Filed Dec. '7', 1940 ATTORNEY Patented Apr. 13, 1943 2,316,284 rtsrmonaa'rron Clyde Edward Ploeger, Evansville, Ind., assignor to Servel, Inc., New York, N. Y., a corporation of Delaware Application December 7, 1940, Serial No. 368,997

11 Claims. (01. 62-115) This invention relates to refrigeration and more particularly to a condensing unit for refrigerating apparatus of the compression type.

It is an object of the invention to provide a condensing unit in which a compressor, a motor, a condenser, and a fan are compactly arranged and mounted on a novel base so as to provide efficient air cooling while occupying a minimum amount of floor space.

Other objects and advantages of the invention will appear in the following description in connection with the accompanying drawing of which:

Fig. 1 is a side elevation of a condensing unit embodying the invention, part of the base being shown broken away to reveal parts of the apparatus therein;

Fig. 2 is a sectional View on line 2-2 of Fig. 1;

Fig. 3 is a sectional view on line 3-3 of Fig. 1.

The illustrated condensing unit consists of a compressor If], an electric motor H for drivin the compressor, an air cooled condenser l2, a fan 13, and a receiver [4. The compressor It is of a reciprocating type, although any type of compressor may be used. The crank shaft of compressor i is indicated by the reference character IS in Fig. 1. The intake connection of compressor if] is shown as a conduit IS. The compressor has a discharge conduit ll adapted to be connected to the lower end [8 of condenser 12 by a conduit, not shown. The upper end 18 of condenser I2 is adapted to be connected to an inlet l9 of receiver 14. Receiver I4 has an outlet 20 adapted to be connected to th inlet side of an evaporator or low side unit, not shown. The intake connection 16 of compressor 19 is adapted to be connected to the vapor line of the evaporator.

A base for supporting said parts of the condensing unit includes a shell 22 of sheet metal bent into a substantially rectangular U-shape or channel form to provide a floor plate 23 and a pair of upright side walls 24. The upper edges of the side walls 24 are bent inward along part of the length to form flanges 25. A plate 21 is supported on and connected to th flanges 25. The compressor Ill is mounted on the upper side of plate 21. The electric motor H is mounted on the under side of plate 21. These parts are secured to the plate by bolts 28 and 29. The plate 21 is secured to the flanges 25 by bolts 35 which pass through rubber cushions 34 between the plate 21 and flanges 25. In this manner, the compressor I0 and motor II are resiliently supported as a unit. The motor and compressor are connected by a belt 40 which passes around the compressor flywheel 39 on shaft l5, and a motor pulley 31 on the motor shaft 38.

Condenser l2 comprises tubing provided with fins for air cooling. The condenser is assembled on a pair of upright plates 45. The plates 45 are flanged outward on their upper and lower edges. The condenser 12 is mounted vertically in one end of the base 22. At this end of base 22, the sections 42 of the side walls 24 are higher and provided with inward flanges 43. The upper flanges 48 of the condenser plates are connected to the base flange 43 by bolts 50. These bolts also hold a plate 5! across the top of the'condenser. The receiver 14 is mounted on top of plate 5|.

Adjacent condenser 12 a fan [3 is mounted on the end of motor shaft 38 beyond the motor pulley 31. In operation, when'motor I5 is operating to drive compressor Ill, fan i3- blows air through the channel 26 in the base 22 to cause a forced draft of air for cooling condenser. l2.

Various changes may be made within the scope of the invention as set forth in the following claims.

I claim:

1. A condensing unit for refrigeration apparatus comprising a substantially U-shaped base, a condenser mounted within said base, a platform secdred to the upper edges of said base, a compressor mounted on th top side of said platform, a motor operatively connected to said compressor and mounted on the lower side of said platform, and a fan operated by said motor for blowing air through said base and over said condenser.

2. A condensing unit as set forth in claim 1 in which said motor and compressor are rigidly secured to said platform, and said platform is resiliently secured to the upper edges of said base.

3. A condensing unit as set forth in claim 1 which also includes a refrigerant liquid receiver mounted on said base above said condenser.

4. A condensing unit for refrigeration apparatus comprising a base formed by sheet metal and U-shaped, said sheet metal being bent to form inward flanges at its upper edges, a platform secured to said flanges, a compressor and a driving motor therefor mounted on opposite sides of said platform, a condenser mounted in one end of said base, and a fan operated by said motor for blowing air through said base and over said condenser.

5. A condensing unit for refrigeration apparatus comprising a base formed of sheet metal and substantially U-shaped, one end of said base being higher than the other, a condenser mounted in said base at the higher end thereof, a vertically arranged motor-compressor unit mounted on said base on the lower end thereof, and a fan operated by said unit for blowing air through said base and over said condenser.

6. A condensing unit as set forth in claim 5 which also includes a liquid refrigerant receiver mounted on said base above said condenser.

'7. A condensing unit for refrigeration apparatus comprising a base formed by sheet metal in a substantially U-shape having inward flanges at its upper edges, a condenser mounted in said base at one end thereof, a motor-compressor unit having a mounting plate with the compressor secured to the top side thereof and the motor secured to the lower side thereof, said mounting plate being resiliently secured to said flanges on the base, and a fan operated by said motor for blowing air through said base and over said condenser.

8. A condensing unit for refrigeration apparatus comprising a base having a pair of upright side walls horizontally spaced apart to provide a space for flow of air therebetween, a condenser mounted on said base at one end of' said space so that air flowing through the space passes in heat transfer relation with the condenser, an electric motor positioned in said space, a fan located in said space and operated by said motor to blow air substantially horizontally through said space and over said condenser, and a compressor connected to be driven by said motor and located above the motor, said motor and compressor being mounted on said base and secured thereto by fastening at the top edges of said side walls.

9. A condensing unit for refrigeration apparatus comprising a base having a pair of upright side walls horizontally spaced apart to provide a space for flow of air therebetween, a condenser mounted on said base adjacent one end of said space so that air flowing through the space passes in heat transfer relation with the condenser, a fan operable to blow air through said space and over said condenser, and a motor-compressor unit, said fan being operated by the motor of said unit, and said unit being mounted on said base and secured thereto by fastening at the top edges of said side walls.

10. A condensing unit for refrigeration apparatus comprising a base having a pair of upright side walls horizontally spaced apart to provide a space for flow of air therebetween, a condenser mounted on said base in the line of air flow through said space so that the condenser is cooled by such air flow, a fan operable to cause said air flow, and a motor and a compressor located one above the other, said motor being connected to operate both said fan and said compressor, and said motor and said compressor being mounted on said base and secured thereto by fastening at the top edges of said side walls.

11. A condensing unit for' refrigeration apparatus comprising a base substantially in the form of a U-shaped channel, a condenser mounted on said base so that air flowing through said channel passes in cooling relation thereto, a motor mounted on said base so as to be located in said channel, a compressor mounted on said base so as to be located substantially above said channel, and a fan operable to cause flow of air through said channel and over said condenser, said motor being connected to operate both said fan and said compressor,

CLYDE EDWARD PLOEGER. 

